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ACQUISITIONS - FPT Industries LLC (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Mar. 01, 2024 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Business Acquisition [Line Items] |  |  |  |
Acquisition of businesses, net of cash acquired |  | $ 2,347,000,000 | $ 762,000,000 | $ 437,000,000
GOODWILL |  | $ 10,419,000,000 | $ 8,988,000,000 | $ 8,641,000,000
FPT Industries LLC |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition of businesses, net of cash acquired | $ 57,000,000 |  |  |
Amount of goodwill expected to be tax deductible | 9,000,000 |  |  |
GOODWILL | $ 34,000,000 |  |  |
Goodwill and intangible assets, expected tax deductible amount, period of deduction | 15 years |  |  |
Business acquisition, intangible assets, expected tax deductible amount | $ 0 |  |  |
Other intangible assets | $ 19,000,000 |  |  |

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